Answer:
A. Dry with low humidity
Explanation:
Atmosphere is the layer of gases that surrounds the earth above air layer. Its conditions affect our climate.
The hydrosphere includes the water which is on the surface of the earth,below the ground and in the air.
Tropics are the region of our earth surrounding the equator.
On analyzing the climatic conditions in the tropics due to the interaction of the atmosphere and hydrosphere, the presence of water droplets in tropics is less resulting in less humidity and, thus the climatic condition is dry.
Therefore the climatic condition that is typically found in tropics due to interaction of the atmosphere and hydrosphere is dry with low humidity.
Answer: The chlorine radical is the most reactive of the among the given halogen molecules and it reacts easily with alkanes. In contrast, the iodine radical is the least reactive of the halogen radicals. In fact, it is so unreactive that it is unable to abstract a hydrogen atom from an alkane.
So, (D) option is correct
Explanation:
Because the speed of light is determined by the medium that is it in. If light is in a vacuum it goes 300 million meters per second but it is slower in air, and even slower in water because water is more dense than the previous two.
A substance that donates electrons to form a covalent bond. So the answer is B
